Initial support for importing downloaded archives

app/src/main/kotlin/com/hippo/ehviewer/download/DownloadManager.kt

@@ -835,5 +835,5 @@ var downloadLocation: UniFile
     }
 
 val DownloadInfo.downloadDir get() = dirname?.let { downloadLocation / it }
-val DownloadInfo.archiveFile get() = downloadDir?.findFile("$gid.cbz")
+val DownloadInfo.archiveFile get() = downloadDir?.run { findFile("$gid.cbz") ?: findFile("$gid.zip") }
 val GalleryInfo.tempDownloadDir get() = AppConfig.getTempDir("$gid")

app/src/main/kotlin/com/hippo/ehviewer/gallery/ArchivePageLoader.kt

@@ -55,7 +55,7 @@ class ArchivePageLoader(
     private val hostJob = launch(start = CoroutineStart.LAZY) {
         logcat(DEBUG_TAG) { "Open archive ${file.uri.displayPath}" }
         pfd = file.openFileDescriptor("r")
-        size = openArchive(pfd.fd, pfd.statSize, gid == 0L)
+        size = openArchive(pfd.fd, pfd.statSize, gid == 0L || file.name!!.endsWith(".zip"))
         if (size == 0) {
             return@launch
         }